(2R,3S,4R,5R)-2,3,4,5,6-pentahydroxyhexanal → HCID 178418489, compound

A further object of this invention is to provide a co-hydrogenation process for producing liquid xylitol compositions that are non-crystallizing at low temperatures. In one aspect, the process comprises co-hydrogenating a sugar syrup mixture comprising a sugar syrup having a dextrose equivalence (DE) of between about 20 DE and about 99 DE, in an amount between about 5 and about 35 weight percent of the mixture, and xylose, in an amount between about 65 and about 95 weight prevent of the mixture, to produce a liquid xylitol composition that is non-crystallizing at low temperatures. The liquid xylitol composition produced by this co-hydrogenation process is preferably non-crystallizing at between about 0° C. and about 10° C., and preferably comprises, at between about 65 and about 90 weight percent dry solids, xylitol, in an amount between about 65 and about 90 weight percent of the dry solids, and sorbitol, in an amount between about 10 and about 35 weight percent of the dry solids. The co-hydrogenating step takes place preferably at a temperature between about 120° C. and about 170° C., and a hydrogen pressure between about 200 psi and about 2000 psi, for between about 90 and about 180 minutes.

ORD record

ord-6e974f63eb644d4ca9c058096ec99748

Source dataset

uspto-grants-2002_12

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US06498248B1